4 This is GNU Bash, version 4.0. Bash is the GNU Project's Bourne
5 Again SHell, a complete implementation of the POSIX.2 shell spec,
6 but also with interactive command line editing, job control on
7 architectures that support it, csh-like features such as history
8 substitution and brace expansion, and a slew of other features.
9 For more information on the features of Bash that are new to this
10 type of shell, see the file `doc/bashref.texi'. There is also a
11 large Unix-style man page. The man page is the definitive description
12 of the shell's features.
14 See the file POSIX for a discussion of how the Bash defaults differ
15 from the POSIX.2 spec and a description of the Bash `posix mode'.
17 There are some user-visible incompatibilities between this version
18 of Bash and previous widely-distributed versions, bash-2.05b and
19 bash-3.2. For details, see the file COMPAT. The NEWS file tersely
20 lists features that are new in this release.
22 Bash is free software, distributed under the terms of the [GNU] General
23 Public License as published by the Free Software Foundation,
24 version 3 of the License (or any later version). For more information,
27 A number of frequently-asked questions are answered in the file
30 To compile Bash, try typing `./configure', then `make'. Bash
31 auto-configures the build process, so no further intervention
32 should be necessary. Bash builds with `gcc' by default if it is
33 available. If you want to use `cc' instead, type
37 if you are using a Bourne-style shell. If you are not, the following
42 Read the file INSTALL in this directory for more information about how
43 to customize and control the build process. The file NOTES contains
44 platform-specific installation and configuration information.
46 If you are a csh user and wish to convert your csh aliases to Bash
47 aliases, you may wish to use the script `examples/misc/alias-conv.sh'
48 as a starting point. The script `examples/misc/cshtobash' is a
49 more ambitious script that attempts to do a more complete job.
54 Bug reports for bash should be sent to:
58 using the `bashbug' program that is built and installed at the same
61 The discussion list `bug-bash@gnu.org' often contains information
62 about new ports of Bash, or discussions of new features or behavior
63 changes that people would like. This mailing list is also available
64 as a usenet newsgroup: gnu.bash.bug.
66 When you send a bug report, please use the `bashbug' program that is
67 built at the same time as bash. If bash fails to build, try building
68 bashbug directly with `make bashbug'. If you cannot build `bashbug',
69 please send mail to bug-bash@gnu.org with the following information:
71 * the version number and release status of Bash (e.g., 2.05a-release)
72 * the machine and OS that it is running on (you may run
73 `bashversion -l' from the bash build directory for this information)
74 * a list of the compilation flags or the contents of `config.h', if
76 * a description of the bug
77 * a recipe for recreating the bug reliably
78 * a fix for the bug if you have one!
80 The `bashbug' program includes much of this automatically.
82 If you would like to contact the Bash maintainers directly, send mail
83 to bash-maintainers@gnu.org.
85 While the Bash maintainers do not promise to fix all bugs, we would
86 like this shell to be the best that we can make it.